package com.app.mvc.util;/** * Created by jimin on 15/12/11. */public class ByteUtil {    public static byte[] toByteArray(Long l) {        byte[] b = new byte[8];        for (int i = 0; i < b.length; ++i) {            b[7 - i] = (byte) ((int) (l.longValue() >>> i * 8));        }        return b;    }    public static byte[] toByteArray(Integer i) {        byte[] b = new byte[4];        for (int j = 0; j < 4; ++j) {            b[3 - j] = (byte) (i.intValue() >>> j * 8);        }        return b;    }}